Turret-lathe.



F. K. HENDRIGKSON. TUB-BET LATHE.

nrucrnon rum; .nnmz, 190s.

Patented Jan. 11, 1910.

.l'u a/ mtov URL 7165.965

:y Milena a P. K. HENDRIGKSON. TUERET LATHE.

APPLICATION FILED JUKB 2, 190B. I 945,947. Patented Jan. 11,1910. I 4 SHEETS-SHEET 4.

1035195566,, 6 zfiiffiradvmmam [6 a a: arr/v1 9a UNITED StCACEI IiTENT OFFICE.

FRED K. HENDRICKS ON, F WORCESTER, MASSACHUSETTS, ASSIGNOR "1'0 PB-EI IT-I CE v BROTHERS COMPANY; OFWORCESTER, MASSACHUSETTS, A CORPORATION OF HAS- SACHUSETTS. r

TURBET-LATHE.

Specification of Letters Patent. Pgitentd'Jfln. 1-1, 1910}- Application filed June 2. 1906. Serial Np. 319,832. a a

a turret lathe of a well-known tye littt'iitg I55 on the lathe bed a carri a em a a ted'to move longitudinally, a sli e 11 out sear- 4 riage moving transversely, anda t iii'rtt 1'2 on the slide. The turret isas usual; vided with means for holdings "luralitvo'f 60 tools and is adapted to beturne on'apfivdti to present any desired toolt'o' cutting p'osi- 1 tion for operation. In th prese nt instance, I have shown the chuclt"13;' with which To all whom it may concern:

Be it known that I, FRED K. HENmuoK- soN,a citizen of the United States, residing at \Vorcester, in the county of \Vorcester 5 and State of Massachusetts, have invented a new and useful Turret-Lathe, of which the following is a specification.

My invention relates to improvements in turret lathcs.

The principal objects of the invention are to provide an improved means for re ulating the lateral traverse stops connected with the turret and operated thereby; to provide means whereby the traverse stops can be 15 operated by hand independently of the position of the turret when it is desired to use the same tool for cutting several surfaces; to )rovide for automatically stopping the fee when a stop screw comes into contact with its stop; to provide an improved connection for the stop motion latch whereby the feed can be stopped or reversed auto matically in a very simple manner; to provide for automatically lockin I the ordinary clutch member used on the tied in central positiomwvhen the open-and -shut nut is i A'lOSGd iO connect the carriage with the feed screw for cutting screw-threads; and to ,rgcnerally improve theconstruction of lathes ,of this character in several other particulars as; will. appear below. j

, Reference is to be had to the acconi )anying drawings which. illustrate a pre erred embodiment of my invention and in which, Figure 1 is a side elevation of a turret lathe with certain features of my invention applied thereto. Fig. 2 is an elevation of a cone pulley partly in section to show the work of the machine. Fig. 3 is a plan of the 40 turret. slide and carriage. Fig. 4 is a sectional view of the same on a line 4-4 of a Fig. 3. Fig. 5 is an end elevation of a centering stop which I preferably employ. Fig. 6 is a sectional view similar to a portion of Fig. 4 and on an enlarged scale. Fig. 7 is an end elevation of a port-ionpf thedevicea Fig. 8 is a side elevation. Fig. Millie a portion ,ofa side elevation similar to ig S on ,an enlarged sca le with parts ;.brokea1 away. to show interior 7 construction, .aE i 403 a sectional 'iei 'be' he i e 0 iii apeem a e fixed to arod 99. This rod is mounted i-i "hearings on the=carr1ta "have aslight longitut inal' motitin" t in. t

In e se-tea stop holdin'g aneia bei 3t which lathes of this character are u jsiiallypro'ifided, as holding work in the fdtfmbfit j c'ot .p'til ley and in Fig. 2 I have illustiat' "this:

which can be obtained wanna-lame turret is as usual, providedwitlii a tighten; ing nut- 14 and a lock lever 15, the lo'clt levei' being mounted on the cross slide'and having y a locking pin 16 and s ring r. W The turret is intended-to be t\t1 11ed='by hand to bring the proper x001 into position for operation and in orderthatthe machine pulley to show the cross'aiidjatertti"cilts UTh may stop automaticallyto providedori the proper operation of eachtool, a sries 'o'f adjustable screw stopsflS are prowided. These are known as thelatenal"traverse stops. lzl't'll corrcs 'ionds t'o oii'eiofi thetools of the turret and tli eym readjusted'in a well-known manner Ito provide for the proper traverse for each tool which' they regulate in conjunctionwith a'istop 19. This stop has a'bod}; 19f) whichfis adjustable along a groovef19t on ithe inside-bf the base. The st0p.\ 19 has a guide 192in the groove and is securfd -i't'iadjusted;position by a clamping mit ifliiu In'order t'o turn these stops as the turret is'tttrned and always have the right std) itrposititmtp operate in conjunction fuith the' propei tqol'fi the following mechanisiii' is' providedr On the bottom of the turret 1s"a"cir(iuliar a gear 20 constantly meshing with a bevel em- 21 splined and slidabletini'a slutffiQQWiiich is mounted in'fixed bearings ofl the arriage 10. This shaft carries a secotidjbevel e a r safwhiclt carries a gear or pinion6261i: Tlii sf'; gear'through a gear27t drives agearfilej and i smeme carriage, being normally held iu -otieieit 'sitioti by'a spring'fitk i i me 50 is mounted to reciprocate on the rod 29 and neutral inoperative position when screwis longitudinally movable on the carriage, is a cavity 32 in which 18 adapted to rest a pm 33 on aloek collar 34. ,Tlns lock collar when it is desired to turn the lateral traverse rods by hand for cutting several surfaces with the same tool, this loch collar is moved to the left to disengage the pin 33 from the cavity 32;and permit the stop holding member to be turned independently of the rod 29; this also permits the rod to be turned independently of the stop holding member. As there is only one cavity 32 for the pin to enter, when the locking collar is again in position for the pin to be in the cavity, it will bring the right stop screw in position for engaging the stop 19 to correspond with the proper tool in the turret. Each lateral stop screw is preferably nuu1- bered to correspond with one. of the tool holders 011 the turret.

hen the machine is in operation, if a certain stop screw 18 comes up against the stop 19, the travel of the rod 529 is arrested, but the carriage still moves a short'distanee, the spring 30 yielding to allow this motion to take place independently of the rod 29. The relative motion between the carriage and the rod 29 is employed for operating my automatic feed stopping device which 1 will now describe. On the rod 29 is a spool 320. Engaging this spool is a member 330 secured to an arm 340 on a shaft 35. This shaft carries a stop motion latch 36. It

will be seen that when there is a relative motion between the rod 29 and the carriage which supports the bearings for the shaft 35, the spool will cause the shaft to be turned slightly and permit the stop motion latch, which is normally in position shown in Fig. 8 under a latch-dog 37, to be swung outwardly and disengaged from the latch dog. The latclrdog is mounted on a rod 38 which is provided with a spring 3!) for normally pulling it down and when the latch is disengaged from the latch-dog, the latter will be pulled down on a projection 40, the upper surface of which is in such position as to hold the rod 38 in a central position and through the instrumentality of a bell-crank 390, to bring the ordinary lutch-member 41 into central position so that the feed will be stopped.

It will be noticed that the latch-dog. as shown in Fig. 1], is provided with a projec tion 42 hich is the portion of the latch-dog that really engages the projection 40. When it is desired to reverse the feed, this projection is turned out of the path of the projection 40 and the spring 39- then forces the latch-d0 onto a seat 43 in which position the clutc member will so more as to reverse the feed.

In order to keep the clutch member 41 in threads are to be cut, I have shown the collar thereon as being engaged by a yoke or the like 44 mounted on a sliding rod 45. This rod is o aerated by a lever 46 pivoted on the apron o the lathe, the lever bein rovided with a pin 47 projecting into a s 0t 48 in the openand-shut nut 49. The head of the slot 48.is long enough to permit the clutch member 41 to move back and forth for re: versing and all the motions that it is in tended to have. When, however, the opeir and-shut nut is closed on the feed screw 50 so as to set the lathe for cutting screw threads, the lower part; of the nut in which is the slot 48, moves upwardly to such an extent that the pin 47 1s turned out of the head of the slot 1-8 and into the narrow shank 51 of the slot. This keeps the clutch member in central inoperative position While the machine is set for cutting screw-threads. The cross-slide is moved across the carriage either by hand or automatically through the use of a rod 52 threaded in a nut on the slide. The rod is provided with a handle 53 for hand operation. For automatic Operation, a gear carrying member is loosely journalcd on this rod and is operated by a train of gears in the usual manner. Under ordinary circumstances, this member is loose and may be tightened so as to operate the rod by a friction ring 55 secured to the rod. This friction ring can 'be tightened up against the gear carrying member by means of npts 5G or in any other erplivalent manner. On the carriage is pivotally mounted a centering stop "57, its end being adapted to engage the slide to stop it and therefore the turret, in central position. Cross traverse stop screws 58 are employed, similar to the screws 18 for engaging stops 59. These stop screws are turned by hand, those at one side by a thumb nut 60 and those at the other by a thumb nut (ll. operating a rod 02.

It is, of course, understood that certain parts of the invention represented herein an be applied to lathes of other types than the one represented in the drawings and that the invention is therefore not limited to this particular type of lathes. I am also aware that the objects of this invention can be carricd out with numerous modifications am that any person skilled in the art can make many changes in the form of construction shown without departing from the scope of my invention as represented in the claims.

Ila ring thus fully lescribed my invention, what I claim and desire to secure by Letters- Patent is t. In a turret lathe. the combination of a turret, a rod rotatable thereby, a holdiu member rotatably mounted on said rod, atf justable stops mounted on said holding memher. a stop for engaging said adjustable sto IS, a lock collar keyed to and slidahle on Sfli rod, said lock member having a pin and said holding member having a cavitv for the reception of said pin.

2. In a turret lathe. the combination of a turret, a rod operated thereby. a stop holding member rotatably mounted on saidrod.

adjustable stops on said stop-holding member, a stop for engaging said adjustable stops. and a locking device on said rod for retaining" said holding men'iber in a certain position on the rod with respect to the position of the turret. said locking device being movable to a position in which the holding member can be turned independei'itlv of the rod.

3. In a turret lathe. the combination of a turret. a rod operable thereby in proportion to the amount of rotation of the turret, a stop holding member mounted on said rod and rotatable thereon. adjustable stops on said stop holding member. a stop for engag- 1 mg said adpistable stops and means for posi- I t1vcl v conneetlug said stop holding member means for normally toreing said rod in a certain direction. a latch-dog on the rod. a stop motion latch adapted to engage the dog f and hold the rod in a certain position. and means con-trncted and adapted to stop the dog when the latch is released therefrom in an intermediate po 'ition to stop the feed.

.1. In a lathe. the combination of a clutch,

for controlling the feed. a movable rod eonneeted with the clutch for operating it. a pring for urging the rod in a certain direction. a latch-dog on said rod. a seat for said latch-dog in position to engage the latch-dog and hold it in position for reversing. said seat having means for holding the latch dog in position forstopping the teed and means for normally holding the latclrdog awry from said seat.

('1. In a lathe. the combination of a clutch for controlling the feed, a movable rod conneotcd with the clutch for operating it", a spring for forcin said rod in a certain direction, a latch-tlhg on the rod, :1 said latch-dog in position to permit the reversal of the feed when the'latch dog moves to a certain position on the seat, and a projection from said seat in position to engage the latch-do and hold it in such position as to stop the feed.

7. In a lathe, the combination of a clutch for controlling the feed, a movable rod connected with said clutch for operating it, a

ring for holding the rod in reversing position. a latch-dog on the rod, a seat against.

which said latch-dog engages when the rod is in reversing position, a projection against which the latch-dog engages when the rod is in neutral position, and removable means for holding the latch-dog away from said seat and projection.

8. In a lathe. the combination of a clutch for controlling the feed, means for holding the clutch in )osition to drive the lathe forward, means or normally urging the clutch into reverse position, a projection for holding the clutch in inoperative position, a feed screw. an open-and-shut nut. and means connected with said nut for positivel holding the clutch in inoperative position when the nut closed on the feedscrew.

t). In a lathe. the combination of a carriage. a slide thereon. and a centering stop pivotall mounted on the carriage. the end of the stop being adapted to engage the slide in central position.

In testimony whereof I hai e hereunto set my hand. in the presence of two subscribing witnesses.

FRED K. HENDRICKSON. Witnesses:

LoUIs V. son'rnoa'rn, .hIARY E. REGANL seat for 

